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@ -19,12 +19,15 @@ |
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;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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;****************************************************************************** |
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%include "libavutil/x86/x86inc.asm" |
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%include "libavutil/x86/x86util.asm" |
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SECTION_RODATA 32 |
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pd_1_256: times 4 dq 0x3F70000000000000 |
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pd_int32_max: times 4 dq 0x41DFFFFFFFC00000 |
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pw_1: times 8 dw 1 |
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pw_128: times 8 dw 128 |
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pq_128: times 2 dq 128 |
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SECTION_TEXT |
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@ -54,3 +57,82 @@ cglobal scale_samples_s16, 4,4,4, dst, src, len, volume |
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sub lenq, mmsize |
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jge .loop |
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REP_RET |
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;------------------------------------------------------------------------------ |
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; void ff_scale_samples_s32(uint8_t *dst, const uint8_t *src, int len, |
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; int volume) |
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;------------------------------------------------------------------------------ |
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%macro SCALE_SAMPLES_S32 0 |
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cglobal scale_samples_s32, 4,4,4, dst, src, len, volume |
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%if ARCH_X86_32 && cpuflag(avx) |
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vbroadcastss xmm2, volumem |
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%else |
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movd xmm2, volumed |
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pshufd xmm2, xmm2, 0 |
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%endif |
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CVTDQ2PD m2, xmm2 |
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mulpd m2, m2, [pd_1_256] |
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mova m3, [pd_int32_max] |
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lea lenq, [lend*4-mmsize] |
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.loop: |
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CVTDQ2PD m0, [srcq+lenq ] |
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CVTDQ2PD m1, [srcq+lenq+mmsize/2] |
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mulpd m0, m0, m2 |
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mulpd m1, m1, m2 |
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minpd m0, m0, m3 |
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minpd m1, m1, m3 |
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cvtpd2dq xmm0, m0 |
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cvtpd2dq xmm1, m1 |
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%if cpuflag(avx) |
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vmovdqa [dstq+lenq ], xmm0 |
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vmovdqa [dstq+lenq+mmsize/2], xmm1 |
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%else |
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movq [dstq+lenq ], xmm0 |
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movq [dstq+lenq+mmsize/2], xmm1 |
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%endif |
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sub lenq, mmsize |
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jge .loop |
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REP_RET |
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%endmacro |
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INIT_XMM sse2 |
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%define CVTDQ2PD cvtdq2pd |
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SCALE_SAMPLES_S32 |
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%define CVTDQ2PD vcvtdq2pd |
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INIT_YMM avx |
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SCALE_SAMPLES_S32 |
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%undef CVTDQ2PD |
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; NOTE: This is not bit-identical with the C version because it clips to |
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; [-INT_MAX, INT_MAX] instead of [INT_MIN, INT_MAX] |
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INIT_XMM ssse3, atom |
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cglobal scale_samples_s32, 4,4,8, dst, src, len, volume |
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movd m4, volumem |
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pshufd m4, m4, 0 |
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mova m5, [pq_128] |
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pxor m6, m6 |
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lea lenq, [lend*4-mmsize] |
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.loop: |
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; src[i] = av_clipl_int32((src[i] * volume + 128) >> 8); |
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mova m7, [srcq+lenq] |
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pabsd m3, m7 |
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pshufd m0, m3, q0100 |
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pshufd m1, m3, q0302 |
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pmuludq m0, m4 |
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pmuludq m1, m4 |
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paddq m0, m5 |
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paddq m1, m5 |
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psrlq m0, 7 |
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psrlq m1, 7 |
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shufps m2, m0, m1, q3131 |
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shufps m0, m0, m1, q2020 |
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pcmpgtd m2, m6 |
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por m0, m2 |
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psrld m0, 1 |
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psignd m0, m7 |
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mova [dstq+lenq], m0 |
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sub lenq, mmsize |
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jge .loop |
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REP_RET |
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